Some mediaeval Christians considered Muslims morally superior to Christians.

Evidence

Islam, of its praise of Christ, and even of its own forms of worship. Piloti repeated the unislamic part of William of Tripoli’s account of Bahira; he shared Tripoli’s generous reaction to Muslim virtue, and Ricoldo’s indignation at Christian feebleness in comparison. If Muslims were converted they would be so much the better Christians; already they extended justice and charity to all human creatures. — Norman Daniel, Islam and the West, 1567